Results 81 to 90 of about 2,335,191 (211)

Reassessing the origin of organic compounds in Mariana forearc serpentinite mud volcanoes: insights from isotopologue and molecular signatures

Progress in Earth and Planetary Science
Serpentinization-associated geofluid systems are thought to facilitate the abiotic synthesis of organic compounds, which may have played a key role in the prebiotic chemical evolution on the early Earth.
Koudai Taguchi, Shinsuke Kawagucci, Alexis Gilbert, Yuichiro Ueno, Yohei Matsui, Yoshinori Takano, Eiji Tasumi, Masayuki Miyazaki, Akiko Makabe, Junichi Miyazaki, Hikaru Sawada, Naoto Takahata, Ken Takai   +12 more
doaj   +1 more source

DEFLECTIONS AND FREQUENCY ANALYSIS IN THE MILLING OF THIN-WALLED PARTS WITH VARIABLE LOW STIFFNESS

Acta Polytechnica, 2019
The disadvantage of the geometry of thin-walled parts, in terms of processing, is the low ability to resist static and dynamic loads. It is caused by the elastic deformation of elements with a low stiffness.
Serhii Kononenko, Sergey Dobrotvorskiy, Yevheniia Basova, Magomediemin Gasanov, Ludmila Dobrovolska   +4 more
doaj   +1 more source

Investigation of tool geometry effect and penetration strategies on cutting forces during thread milling [PDF]

, 2014
The application of thread milling is increasing in industry because of its inherent advantages over other thread cutting techniques. The objective of this study is to investigate the effect of milling cutter tool geometry on cutting forces during thread ...
BRENDLEN, Romain, FROMENTIN, Guillaume, POULACHON, Gérard, SHARMA, Vishal   +3 more
core   +3 more sources

A performance of 2 dimensional ultrasonic vibration assisted milling in cutting force reduction, on aluminium AL6061 [PDF]

, 2016
This paper were investigate a performance of 2 Dimensional Ultrasonic Vibration assisted Milling (UVAM) toward Aluminium Al 6061. The focus is to find the performance of reduction of cutting force compared to the conventional machining in the industries ...
Abd. Rahim, Erween, Hui, Ding, Ibrahim, Rasidi, Kai, Cheng, Rafai, Noor Hakim   +4 more
core  

Efficient and stable visible-light-driven Z-scheme overall water splitting using an oxysulfide H2 evolution photocatalyst

Nature Communications
So-called Z-scheme systems permit overall water splitting using narrow-bandgap photocatalysts. To boost the performance of such systems, it is necessary to enhance the intrinsic activities of the hydrogen evolution photocatalyst and oxygen evolution ...
Lihua Lin, Yiwen Ma, Junie Jhon M. Vequizo, Mamiko Nakabayashi, Chen Gu, Xiaoping Tao, Hiroaki Yoshida, Yuriy Pihosh, Yuta Nishina, Akira Yamakata, Naoya Shibata, Takashi Hisatomi, Tsuyoshi Takata, Kazunari Domen   +13 more
doaj   +1 more source

Ophthalmic method and apparatus [PDF]

, 1973
A method and apparatus for removing material and components such as the lens from an eye is described. High speed rotary cutting members at one end of a rod macerate the lens while an annular tubing disposed around the cutting members vibrates ...
Evvard, J. C., Mcgannon, W. J., Vargo, D. J.   +2 more
core   +1 more source

Automation of technological preparation of metal working on heavy machine tools [PDF]

, 2018
The programs for selection of the cutting tools construction and cutting regimes are working in unrestricted surroundings elaborate of addition SharpDevelop in language C#.
Klymenko, G. P., Kvashnin, V. V.
core  

Method and tool for machining a transverse slot about a bore [PDF]

, 1980
A method and apparatus for cutting a transverse slot about a bore of smaller diameter than that of the slot are disclosed. The invention consists of introducing a cutting head facing transversely to the bore, through the bore opening its distance from ...
David-Malig, M. A.
core   +1 more source

Experimental tests and empirical models of the cutting force and surface roughness when cutting 1Cr13 martensitic stainless steel with a coated carbide tool

Advances in Mechanical Engineering, 2016
Cutting force prediction is the key issue for planning and optimising the machining process. To explore the cutting of difficult-to-machine 1Cr13 martensitic stainless steel, an orthogonal test was conducted to study the cutting force and surface ...
Xu Chuangwen, Xu Ting, Yi Xiangbin, Zhang Jilin, Liu Wenli, Li Huaiyuan   +5 more
doaj   +1 more source

Modelling and simulation of the dynamic cutting process and surface topography generation in nano/micro cutting [PDF]

, 2008
In nano/micro cutting process, the surface quality is heavily dependent on all the dynamic factors in machining including those from the material, tooling, cutting parameters, servo accuracy, mechanical structure deformation, and non-linear factors as ...
Cheng, K, Zhou, L
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